After cleaning house at Warner Music Group, new Warner chief Lyor Cohen has unveiled his dream-team quartet of top honchos to reinvent the music business.

The four executives are behind the careers of many of music’s hottest new acts and legends, ranging from Mariah Carey and Bon Jovi to Twist and Sean Paul.

Among them are veteran Ahmet Ertgun, the reigning dean of the recording industry, who called his colleagues “the best young team of music executives I’ve even seen in my career.”

The team includes Jason Flom, Craig Kallman and Julie Greenwald.

Warner Music was reincarnated earlier this year when Edgar Bronfman and his investors bought it for $2.6 billion from Time Warner to create a broadly diverse music label that could be independent of usual corporate restraints.

“We’ve truly an independent record company, and we’re less focused on quarterly reports and more about taking risks,” said Cohen.

“We won’t be as constrained as others are.”

The company also has created a new label, Atlantic Records Group, by combining three of the industry’s most respected labels: Atlantic, Elektra and Lava Records.

“The catalog is the richest in the music industry,” said Cohen.

Flom, founder of Lava, will be the label’s new Chairman and CEO; Kallman, the president of Atlantic, will be co-chairman and COO, and Greenwald, formerly of Island Records will become president.

The industry has been waiting for the dust to settle at Bronfman’s new Warner venture.

Some consider Warner a new business model of a leaner, more tech-savvy operation that could determine the future of the recorded music industry.

Music labels had been chided for years for waste, big egos, duplication and a failure to grasp new technology.

After Bronfman’s group closed on the deal for Warner Music, it fired about 1,000 people, or 20 percent of the staff.

Bronfman recruited Cohen from his post as head of Island Records to head up the venture.